Automatic stock regulator for paper machines



L. BOIVIN..

AUTOMATHC STOCK REGULATOR FOR PAPER MACHINES. APPLlcATloN FILED MAY 3.|920.

frs.

Vao

UNITED STATES PATENT OFFICE.

LOUIS BOIVTN, OF WOODLAND, MAINE.

V AUTOMATIC STOCK REGULATOR FOR PAPER- MACHINES.

Application filed May 3, 1920.

To all whom #may concern.'

Be it known that I, LOUIS BoIvIN, a citizen of the United-States,residing at Woodland, in the county of Vashington and State of Maine,-have inventedce'tain new and useful improvements in Automatic StockRegulators forV Paper Machines; and l do hereby declare the following tobe a full, clear, and exact description of the invention, such as willenable others skilled in the art to which it appertains to make and usethe same.

Thepresent invention relates to improvements in automatic vstockregulators for paper machines, and has for an object to provide animproved automatic stock regulator for controlling the amount of stockpassing to the paper machine.

At the present time regulators of this class have to be verycarefully'adjusted each day and have tobe continuously watched in orderthat the amount of stock passing to the papel-*machine may be uniform.

It a regulator which will be automatic in action and which will dispensewith the necessity of manual adjustment and will do -away with thecontinuous attendance upon the machine.

In thek accompanying drawings forming a part of this application, and inwhich similar-reference symbols indicate corresponding parts in theseveral views:

The figure shows a vertical sectional view through a stock box providedwith an im.- proved automatic regulator constructed in accordance withthe present invention.

eferring more particularly to the drawings, 1 designates generally stockbox into which the stock is fed through an opening 2 locatedsubstantially centrally of the boX and in the bottom 3 thereof. Theopening 2 communicates with a central compartment 4 confined betweenpartitions 5 and 6 placed transversely of the box and mounted insuitable guides 7 and 8. The partition 5 cooperates with the end 9 ofthe box to provide an overflow compartment 10 with an opening 11 in thebottom thereof through which the stock may be returned to the stocksupply reservoir.

l have shown in broken lines pipes as connected with the openings 2 and11 for respectively delivering the stock to the central compartment 4and returning same from the compartment 10 to the source of supply. An

Specification of Letters Patent.

is an object of the invention to provideV Patented Mar. 7, 1922. serialNo. 378,543.

opening 12 is made in the partition 5 at a suitable elevation throughwhich the stock may flow from the compartment 4 into the tinuation of anopening 17 which communicates with a pipe appearing in broken lines.This pipe serves to convey through the cone 16 to the paper machine.

The passage of the stock is regulated by a copper conical bulb 18carried on the lower end of a vertically reciprocating rod 19 and havinga tip 2O slidably fitted in the upper end of a tubular guide 21. Theguide serves to support and center t-he lower end of the conical bulb1S. The bulb 18 is hollow and usually made of copper. The rod 19 abovethe stock regulating bulb and also preferably slightly above the top ofthe cone 16 is provided with a second bulb 22 also made hollow andpreferably of copper and composed of two frusto conical sections havingtheir wide basel ends fitted together.

Above the compartment 14 is a` beam 23 extending crosswise of the box 1and through which the rod 19 vertically reciprocates. A pair of wingnuts 24 and 25 are threaded'on thel portions of the rod 19 respectivelyabove and below the beam 23, and they individually act to adjust thecompression of a pair of coil springs 26 and 27 wound about the rodbetween the beam and the two nuts. The ufpper end of the rod 19 ispivotally connected to one end of a lever 27 fulcrumed as indicated at28 on a bracket 29 secured to the end 15 of the stock box 1. The levercarries an adjustable counterweight 30 adjustably secured to the same bya set screw 31.

In operation the stock from a source of supply flows in through theopening 2 to the compartment 4 and rises therein up to a height which isregulated by the presence of the opening 12, which permits overflow intothe compartment 10 to the left. The overflow stock from this compartment10 circulates back through the opening 11 to the source of stock supply.

the stock flowing l The opening 13 in the partition 6 is :placed justslightly below the opening 12 so that the constant level of the stock inthe central compartment 4l is at or about such opening 13 whereby thesteek may 'overflow constantly into the compartment 14 to the right.

This stockflows down into the wooden cone '16 and is allowed to pass outwhen the bulb bulb 22, causing the thin or diluted with water, the upperbulb y the port area.

Q2 will be relieved of excessive pressure and will tend to rise in theliquid sol that thc lower bulb 18 will rise, thusl opening wider It willthus be seen that the actual quanltityof the stock passing to the paperma irrespective oi' its 24 and 25 will be impose greater or chine willbe uniform condition. The nuts individually regulated to less tensionupon the action of the upper bulb 22,*and the counterweight may also bevadjusted to balance 'the various bulbs Vand rod in a manner which willbe well understood. Y

It is obvious'ltliat those skilled in the art may Avai-y the details otconstruction and `arrangements of parts without departing fromthefspirit of' iny invention, and therefore l ldo not wish to `belimitedto such features except as maybe required by the claims. l p I claim: YY

1. 1n combination with4 a stock box having in case the stock is anoutlet cone, a bulb controlling the'outlet through the cone, and asecond bulb coc- Ynected to the first named bulb land acted upon by theweight of the stock in the box for moving the irst'named bulb torestrict or enlarge the poi't area through which the stock escapes tothe paper machine, substantially as described.

2. In combination with a stock box having an outlet cone, a bulbcontrolling-the escape of Vthe stock through the cone, a rod connectedto said bulb, a second bulbixed on the rod and acted on'by the weight ofthe stock to 'rise and fall, and counterweiglit ineans connected totheupper end of the rod7 substantially as described. Y

3. ln combination with a stock box having an outlet cone, a bulb forcontrolling the escape of the stock through the cone, a rod connected tothe bulb, a second bulb fixed on the'rod above the fii'st'named bulb andacting to rise and fall in proportion to the weight of the stock, andmeans Vfor adjustably tensioning said rod, substantially as described..v A

4. In combination witha stock box having an outlet cone, a bulb forcontrolling the outlet cone, a rodY connected to thebulb, a second bulbon therod acted uponfby the weight of the stock to raise and lower theiirst named bulb, a beam through which said rod reciprocates, springmeans .bearing against the upper and lower sides ot the beam, andadjustable means on the rod above and below the beam and adapted toVbear against said spring means vfor tensioning the rod in its movementsin both directions,

and counterweiglitmeans also connected to said rod, substantially asdescribed. i

Louis Boivinv

